Aptitude Practice Question and Answer
8 Q: 80 liters of a mixture of alcohol and water contains 60% alcohol. If 'X' liters of water is added to this mixture, then the percentage of alcohol in the new mixture becomes 40%. What is the value of 'X'?
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6426e3692b960e1a418c50a1- 120false
- 280false
- 340true
- 460false
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Answer : 3. "40"
Q: In ΔABC, D and E are points on the sides AB and AC, respectively, such that DE || BC. If AD = 5 cm, DB = 9 cm, AE = 4 cm and BC = 15.4 cm, then the sum of the lengths of DE and EC (in cm) is:
1016 064c8d763a919c8488e228ff0
64c8d763a919c8488e228ff0- 111.6false
- 210.8false
- 313.4false
- 412.7true
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Answer : 4. "12.7"
Q: What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square?
1015 0630ded3f4e3bf85cbe748a92
630ded3f4e3bf85cbe748a92- 11false
- 26false
- 35true
- 44false
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Answer : 3. "5"
Q: In a circle with centre O, BC is a chord. Points D and A are on the circle, on the opposite side of BC, such that ∠DBC = 28° and BD = DC. What is the measure of ∠BOC?
1015 064ba514bc3da05b2213e3986
64ba514bc3da05b2213e3986- 1false
980
- 2false
840
- 3true
1120
- 4false
960
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Answer : 3. "1120
"
Q: In a 20 over match, the required run rate to win is 7.2. If the run rate is 6 at the end of the 15th over, the required run rate to win the match is:
1015 064104f0e56c45fd8d3ac3547
64104f0e56c45fd8d3ac3547- 11.2false
- 210.8true
- 313.2false
- 412false
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Answer : 2. "10.8"
Q: Two positive numbers differ by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater number is:
1015 064bfb2f4e2108a7239492d0d
64bfb2f4e2108a7239492d0d- 11558false
- 21458false
- 31585false
- 41485true
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Answer : 4. "1485"
Explanation :
Given :- Two positive numbers differ by 1280
When the greater number is divided by the smaller number The quotient is 7 and the remainder is 50
Concept :- Dividend = Quotient × divisor + remainder
Calculation :- Let greater number = a and Smaller number = b From question, ⇒ a - b = 1280 ....(1) Again from question, ⇒ a = 7b + 50 ....(2)
Put the value of a from equation (2) into equation (1) ⇒ 7b + 50 - b = 1280 ⇒ 6b = 1280 - 50 ⇒ 6b = 1230 ⇒ b = (1230/6) ⇒ b = 205
Put the value of b in equation (1) ⇒ a - 205 = 1280 ⇒ a = 1280 + 205 ⇒ a = 1485 ⇒ Greater number = 1485 ∴ Greater number is 1485
Q: What percent of 3.6kg is 72 gms ?
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65424f3299dc28caf02ba6cf- 132%false
- 222%false
- 312%false
- 42%true
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Answer : 4. "2%"
Explanation :
Q: Which of the following fraction is the smallest?
$$7\over 6 $$,$$7\over 9$$,$$4\over 5$$,$$5\over 7$$
1013 065081b75e918d9427f49639d
65081b75e918d9427f49639d- 1$$7\over 6 $$false
- 2$$7\over 9$$false
- 3$$4\over 5$$false
- 4$$5\over 7$$true
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Answer : 4. "$$5\over 7$$"
Explanation :
